html,
body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    background: #fafafa;
    color: #333
}

.container {
    width: 60%;
    margin: 40px auto;
    padding: 20px;
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, .08)
}

h1 {
    color: #ff6633;
    text-align: center;
    margin-bottom: 30px;
    font-size: 24px
}

.section {
    margin-bottom: 30px
}

.book-list {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: flex-start
}

.book-item {
    background: #fff;
    border: 1px solid #e5e5e5;
    border-radius: 6px;
    padding: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
    width: calc(50% - 10px)
}

.book-cover {
    width: 60px;
    height: 90px;
    object-fit: cover;
    border-radius: 4px
}

.book-info {
    flex: 1
}

.book-info h6 {
    margin: 0;
    font-size: 14px;
    font-weight: bold
}

.book-info p {
    margin: 2px 0;
    font-size: 12px;
    color: #666
}

.btn-sm {
    padding: 4px 8px;
    border: 1px solid #ff6633;
    background: #fff;
    color: #ff6633;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px
}

.btn-sm:hover {
    background: #ff6633;
    color: #fff
}

.back-btn {
    text-align: center;
    margin-top: 20px
}

.back-btn button {
    padding: 8px 20px;
    background: #ff6633;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    cursor: pointer
}

.back-btn button:hover {
    background: #e55a2b
}